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DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
LNB , how to know is dead?
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<blockquote data-quote="Miika" data-source="post: 1152690" data-attributes="member: 260085"><p>There are lot of help provided, but above quoted description tells unambiguously, that there is short circuit or remarkable overload between meter and LNB, that activates the STB's short circuit protection. </p><p></p><p>As mentioned, fault can be in cable end, if F-connector shield has got in touch with centre wire, or in motor circuitry. LNB itself can have short circuit inside, but this is quite rare; usually LNB's fault is expressed as no signal with or without usual current consumption, or only one polarity/frequency band is working. </p><p>...</p><p>To check if LNB is ok, leave the motor unconnected and put cable directly from LNB to sat meter. If meter stays light-up, then try zap or search some channels; provided that antenna is aligned to desired or any other satellite, you can receive correct or wrong channels respectively. If there are no channels, it still doesn't say that LNB is faulty - in case when motor has moved the antenna between satellites, there is no and won't be any signal before antenna is realigned. But in that case it is preferreable to change LNB and cables with new on and try again to firmly rule out LNB's fault, because if you de-attach the motor, getting it back correctly is way more difficult (and expencive) than change LNB just to be sure it is ok.</p></blockquote><p></p>
[QUOTE="Miika, post: 1152690, member: 260085"] There are lot of help provided, but above quoted description tells unambiguously, that there is short circuit or remarkable overload between meter and LNB, that activates the STB's short circuit protection. As mentioned, fault can be in cable end, if F-connector shield has got in touch with centre wire, or in motor circuitry. LNB itself can have short circuit inside, but this is quite rare; usually LNB's fault is expressed as no signal with or without usual current consumption, or only one polarity/frequency band is working. ... To check if LNB is ok, leave the motor unconnected and put cable directly from LNB to sat meter. If meter stays light-up, then try zap or search some channels; provided that antenna is aligned to desired or any other satellite, you can receive correct or wrong channels respectively. If there are no channels, it still doesn't say that LNB is faulty - in case when motor has moved the antenna between satellites, there is no and won't be any signal before antenna is realigned. But in that case it is preferreable to change LNB and cables with new on and try again to firmly rule out LNB's fault, because if you de-attach the motor, getting it back correctly is way more difficult (and expencive) than change LNB just to be sure it is ok. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
LNB , how to know is dead?
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